GUI for downloading/managing homebrew apps for video game consoles
An award-winning drawing program for children of all ages
FlightGear Flight Simulator: free open-source multiplatform flight sim
A very efficient tutor.
Colonize the New World.
An Ubuntu remix for both new and experienced Linux sophisticates
Good-looking and addictive OpenSource games
3D Engine c++
MedGui Reborn is a frontend (GUI) for Mednafen multi emulator.
4X Space Strategy Game
C64/Amiga emulator with PAL shader and runAhead
Zoomable user interface (ZUI) with file manager, file viewers and more
GemRB is a portable open-source implementation of the Infinity Engine